Though most of these are probably nofollow this is a great way to find blogs to post on for the purpose of traffic.
new blog post - Twitter Search
Damn thing spits out like 40 new posts a minute. Bet you cant keep up with that.
Of course you can add another keyword to narrow your niche down too.
Be the first one to leave a comment on these blogs and get the most traffic! Dont spam though, read the post and make a good contribution to the page to get accepted.